Clear as a bell
Materials that let all light through, such as air or eyeglasses
Transparent
The bouncing of a wave off a surface, such as light hitting a mirror
Reflection
The highness or lowness of a sound, which is determined by its frequency
• Pitch
The method used by animals like bats and dolphins to locate objects by reflecting sound
• Echolocation
Acts like a funnel to collect and direct sound waves into the ear
• The Outer Ear
Materials that let some light through but appear blurry, like tissue paper or a foggy shower door
Translucent
The bending of a wave as it passes from one substance to another, often occurring with lenses
Refraction
The measure of how loud or soft a sound is
• Volume
A specific type of echolocation used underwater that calculates an object's location based on the return time and direction of a sound wave
• Sonar
Vibrates like the head of a drum when hit by sound waves
• The Eardrum
Materials that completely block light, such as a wall or a science book
Opaque
Understanding that sound travels fastest through solids and slowest through gases
• Mediums
The number of wavelengths that pass a specific point in a set amount of time
• Frequency
These two specific animals are noted for their ability to use echolocation to locate objects by reflecting sound.
• Answer: What are bats and dolphins?
Contains three tiny bones—the hammer, anvil, and stirrup—that pick up vibrations
• The Middle Ear
This term describes materials like a table top, a wall, or a science book that completely block light from passing through.
Opaque
While sound waves can travel through solids, liquids, and gases, they travel with the greatest speeds through this specific medium.
• Answer: What are solids?
The fact that pitch decreases as a person moves away from a sound
• Distance
To accurately calculate an object's location, sonar systems measure both the direction and this other factor of the returning sound wave.
• Answer: What is return time?
Uses a fluid-filled coiled tube and hair cells to signal the nerve
• The Inner Ear
When looking through tissue paper or a foggy shower door, objects on the other side appear blurry because the material is this.
What is Translucent?
This object is a primary example of something that can refract light, causing the light to bend as it passes through it.
• Answer: What is a lens?
This is the specific change that occurs to the pitch of a sound as a person moves away from its source.
• Answer: What is it decreases?
Clue: Because they use echolocation, this is the specific way that bats are able to "see" in the dark.
• Answer: What is by using reflected sound?
Receives signals from the ear's nerve and interprets them as sound
• The Brain